Citric acid

InChI

1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)

InChI key

KRKNYBCHXYNGOX-UHFFFAOYSA-N

SMILES string

OC(=O)CC(O)(CC(O)=O)C(O)=O

grade

biotech. grade

product line

BioUltra

assay

≥99.5% (T)

form

powder or crystals

expl. lim.

8 %, 65 °F

technique(s)

cell culture | hybridoma: suitable

impurities

insoluble matter, passes filter test

ign. residue

≤0.05% (as SO₄)

loss

≤0.5% loss on drying, 110 °C

pH

1.0-2.0 (25 °C, 1 M in H₂O)

pKa 

(1) 3.13, (2) 4.76, (3) 6.4

mp

153-159 °C (lit.)

solubility

H₂O: 1 M at 20 °C, clear, colorless

anion traces

chloride (Cl^-): ≤5 mg/kg, oxalate (C₂O₄^2-): ≤0.05%, phosphate (PO₄^3-): ≤5 mg/kg, sulfate (SO₄^2-): ≤20 mg/kg, tartrate (C₄H₄O₆^2-): ≤0.20%

cation traces

Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

λ_max

260 nm (Amax: ≤0.20), 280 nm (Amax: ≤0.10)

λ

1 M in H₂O

UV absorption

λ: 260 nm A_max: 0.20, λ: 280 nm A_max: 0.10

Quality Level

200

Gene Information

human ... SRC(6714)